If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

Vishnu Tuning finally managed to eek out a 10 second pass in their single turbo E92 335i that they were once touting would be in the 9's. After multiple unsuccessful attempts (with driver errors) from Vishnu owner Shiv Pathak he was able to get a high 10 second slip by raising the boost according to his data log and shifting cleanly. Details are scarce as Vishnu did not provide information on the youtube video upload and there also is no exterior view to show the slip actually correlates to the run shown in the video.

We will give the benefit of the doubt here but with all secrecy and the multiple attempts to get to this point the performance is simply underwhelming for the time and money investment. The car is said to have run 10.8@131. It recently was dyno'd at 627 wheel horsepower by Insideline so these horses are not translating well to the ground. This single turbo offers considerable lag and the top end pull for the sacrifice simply is not there especially compared to existing solutions such as the Rob Beck twin turbo upgrade which offers far greater spool and performance only a few miles per off through the traps but with far greater driveability.

The previous record was 11.10@127.21 with 19 psi of boost on the RB turbos. These turbos are a much more affordable option that also currently is available. Vishnu claims 23.5 psi of boost for this 10.8@131 mph run. Is it worth the minor top end benefit for the estimated $8500+ plus install? We do not think so and considering the way Vishnu hyped this the results are very underwhelming. The low end torque sacrifice is not being justified with a large top end gain.

We wish Vishnu luck in the future but for now this is still an experiment and work in progress that is tough to buy both figuratively and literally. There are more affordable options that work better for daily driven N54 vehicles that offer 97% of the performance in practice (as in not just a dyno queen) with less compromises. Not to mention for users to repeat what Vishnu has done here with their own single turbo it will likely be far more difficult as they will not have the option of risking their engine with higher boost and timing advances simply to try to eek out a tenth to squeeze past what already exists and get into the 10's. It may be a record, but it certainly is not impressive considering where the bar was already set with far less horsepower and much more affordable tuning and hardware options.

You can see those posts in threads here regarding the upped boost and power output. Whether they are accurate or not I do not know as Vishnu didn't take the time to write the specs.

Im with Shiv and Sean right now. You would do your forum a service by not spreading misinformation about power levels or boost pressures. They posted a datalog of the run on e90post. Maybe you should look at it instead of complaining that they aren't providing information.

Im with Shiv and Sean right now. You would do your forum a service by not spreading misinformation about power levels or boost pressures. They posted a datalog of the run on e90post. Maybe you should look at it instead of complaining that they aren't providing information.

Listen, I asked for the specs and haven't posted any article or details. So shut up and provide the specs if you are with them.

I didn't write the car was up to 680, others did. I'm asking for confirmation but there is WAY WAY WAY too little info posted. Shiv had the opportunity when he uploaded the video to include something in the description.

I don't read e90post and don't care what is posted there. You are on BimmerBoost, look at the url in your browser if you need help.

You said the car was making 680whp.... Wrong.
You said the car was running 28psi... Wrong.

All the info (video/datalogs/pics) has been posted on e90post. Everything. If you want to do a write up on it, why don't you check out that site or ask Shiv in person. He will be at Bimmerfest tomorrow. I'm sure he would love to meet you.

You said the car was making 680whp.... Wrong.
You said the car was running 28psi... Wrong.

Wrong, learn how to read. I said I didn't know:

Originally Posted by Sticky

Whether they are accurate or not I do not know as Vishnu didn't take the time to write the specs.

Secondly, someone else wrote 680 whp and I have been asking for confirmation and clarification:

Originally Posted by ChuckD05

His 60-130 shows he's making good power but the 1/4 mile mph is not there. It really could be the wrong final drive choice, however , it gets harder to gain mph after 130 but with 680 he should be able to have atleast a few traps by now at 133-135 and he doesn't (with the power he claims). It's odd.